@@ -65,10 +65,28 @@
                         Set a codegen option
     -V, --version       Print version info and exit
     -v, --verbose       Use verbose output
+        --extern <NAME>[=<PATH>]
+                        Specify where an external rust library is located
+        --sysroot <PATH>
+                        Override the system root
+        --error-format <human|json|short>
+                        How errors and other messages are produced
+        --json <CONFIG> Configure the JSON output of the compiler
+        --color <auto|always|never>
+                        Configure coloring of output:
+                        * auto = colorize, if output goes to a tty (default);
+                        * always = always colorize output;
+                        * never = never colorize output
+        --diagnostic-width <WIDTH>
+                        Inform rustc of the width of the output so that
+                        diagnostics can be truncated to fit
+        --remap-path-prefix <FROM>=<TO>
+                        Remap source names in all output (compiler messages
+                        and output files)
+    @path               Read newline separated options from `path`
 
 Additional help:
     -C help             Print codegen options
     -W help             Print 'lint' options and default settings
     -Z help             Print unstable compiler options
-    --help -v           Print the full set of options rustc accepts
 
